Sanyo HIT-H250E01 & Sanyo HIT-H245E01 panels - Real time production

[2ndBillericay]

I was wondering if anyone has installed either of these two panels and what the actual output power has been during our summer.

I am in South Essex and need the shape of these panels to fit my space 1 x 4 stacked in Landscape.

I am looking at producing a max of 240w per panel for my inverter choice so am looking for a 2% loss on the 245w panel or a 4% loss on the 250w panel.

Thanks

Richard

[volzhskyboy]

Errrm, Are they different?

[2ndBillericay]

OOPS - corrected 250w & 245w

Sorry

[volzhskyboy]

If you have a trawl through here

  http://www.navitron.org.uk/forum/index.php/board,33.0.html 

you might find what you're looking for.

Bill.

[2ndBillericay]

Thansk

I see you have 16 of the 250w babies, can you tell me what your highest wattage produced was this summer ?

then if i divide it by 16 it will give a per panel rate.

Richard

[volzhskyboy]

As posted earlier in the 'July results',,,,,

Here goes, first production run for July 2011,
System went live at 13.00hrs on the 08th so based on 22.5 days output.

System: 4KWp, 40 degree slope, South facing.

Total generation: 373.46 KWh

Daily average: 16.6 KWh

Generation per KWp: 93.36KWh (22.5 days)

Daily average per KWp: 4.15KWh

Best day: 15/07/11 (27.71 KWh)

Worst day: 13/07/11 (6.25KWh)

Bill.

[2ndBillericay]

So yoru best day was just under 28KwH for a 4Kw system so 7Kw per Kw installed.

7Kw over 16 panels is 1.75Kwh per panel
Manston had the highest sunshine at 11.8 hours so say you had 8 good hours that would be 218w constant for the duration per panel.

I think 218w per panel looks low but my math may be wrong !!

Your inverter may hold the data but it all depends on the quality of your sunshine and duration.

[EccentricAnomaly]

Volzhskyboy, 2ndBillericay asked for the highest power production ("highest wattage"). Your numbers don't really help all that much with finding that as they're averaged over a whole day so say nothing about peaks of production.

2ndBillericay, there's no particular reason to think your panels won't sometimes produce the "nameplate" power output or a little more. The question is does it matter: presumably the inverters won't be damaged as they'll limit the power throughput for themselves and the amount of energy loss will be small because the power excess is small and only for relatively short periods of time.

From the preceding paragraphs I have no idea where your 73 W figure comes from. Care to explain in more detail? (It might also be helpful to carefully distinguish kW and kWh. I assume your "7Kw" figure should be "7 kWh" but if not that might be a clue.)

[volzhskyboy]

The highest wattage I've personally seen (and it was today too) when looking at live output was 4.10kw.

[2ndBillericay]

Hi, the 73w was an uncorrected draft calculation where i double divided - now corrected to 218w

If the peak of 4.1Kw was seen today then the 250w panels were generating an average per pabel of 256w

If i have two 250w panels connected to a SMI-D480W-60-UK inverter then it should not damage it the data sheet says :-

Input Data (DC)
Nominal Input Power              480w
Recomended PV Power (STC)  500w


Output Data (AC)
Maximum Output Power           480w

Plus has a 20 year warranty

If recomended power is 500w is it using the extra 10w to power itself and then output 480w AC

[volzhskyboy]

The 4.1kW output seen is an arbitrary figure as it is the highest seen by chance and does not mean that there has not been a higher figure, it depends on what is being produced at the time of 'looking' as 'peak' outputs do not appear to be recorded but 'mean peak' outputs over a given time are recorded.
Bill.

[volzhskyboy]

Footnote;

I've looked through the records for this system (bearing in mind that this Pv system only started production on the 8th July) and it records the mean average of 5 minute increments.
The highest 5 minute average is shown as being 3.996kW from 12.55 to 13.00 hrs on the 18th of July.
The instantaneous figure I gave earlier of being 4.1kW that was witnessed today was correct but the highest 5 min increment average recorded for today was 3.720W at 12.30 to 12.35 hrs.
'Instantaneous' depends on what you see when you happen to look.

Bill.

[supremetwo]

The highest wattage I've personally seen (and it was today too) when looking at live output was 4.10kw.

Would that not have the ability to push more than the 16 amp G83 limit into the grid?

[billi]

If i have two 250w panels connected to a SMI-D480W-60-UK inverter then it should not damage it the data sheet says :-

Input Data (DC)
Nominal Input Power              480w
Recomended PV Power (STC)  500w


Output Data (AC)
Maximum Output Power           480w

Plus has a 20 year warranty

I would be more worried about the Maximum Voltage of your  favourable  inverter  instead  off Watts

out of the data sheet

 Input Data (DC)
Nominal Input Power 480W
Recommended PV Power (STC) 500W
Maximum DC Voltage 43V
Minimum DC Voltage 20V
MPPT Voltage Range 21V - 35V
Maximum Input Current 24A


and as far as i can see the sanyo panels  might exceed those limits (open Voltage is 43.1 Volt  for the 250 Watt one)  and will in winter

Is the  20 years warranty  then still  valuable ?


But i see it will be hard to find a right inverter  

[volzhskyboy]

The highest wattage I've personally seen (and it was today too) when looking at live output was 4.10kw.

Would that not have the ability to push more than the 16 amp G83 limit into the grid?

I would imagine so if the inverter was not set to the G83 output. This one clearly states set to G83.